You should purchase the Triangulation CD. Its wonderful for 1/2 sq triangles and others (flying geese, etc.). Its about $30 but well worth it. You will get paper piecing patterns for triangles in every size and you will have little waste. You definitely need to have a computer and a printer, and like to paper piece. They are fast and absolutely perfect every time. If I were to make them the traditional way, I would make them larger and square them up. I found to have better results that way. I would rather waste a little fabric then have my triangles too small and not so perfect.